206664146 has 16 divisors (see below), whose sum is σ = 335033664. Its totient is φ = 95043024.

The previous prime is 206664137. The next prime is 206664151. The reversal of 206664146 is 641466602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6686 + ... + 21401.

It is an arithmetic number, because the mean of its divisors is an integer number (20939604).

Almost surely, 2^206664146 is an apocalyptic number.

206664146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

206664146 is a deficient number, since it is larger than the sum of its proper divisors (128369518).

206664146 is a wasteful number, since it uses less digits than its factorization.

206664146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28385.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 206664146 is about 14375.8180984596. The cubic root of 206664146 is about 591.2280711547.

The spelling of 206664146 in words is "two hundred six million, six hundred sixty-four thousand, one hundred forty-six".